Fortunately, I just play for fun, and I don't remember the last time I made a withdrawal, as I always use all the funds to play more games (the few times I get a positive balance), so KYC hasn't been a problem for me.
Not matter for gambler playing for fun in casino and seems have been habit common when KYC in gambling or casino account, the same as crypto hunter have did several time KYC in exchange market looks not worry have to KYC with casino or gambling account. But left casino and gambling account are free for playing without KYC still enjoying there and not submit document yet during not required by gambling account or my withdrawing fund not bigger yet.
Some gambler KYC become big problem for them because want to make his privacy when playing in casino or active in gambling platform, why many gambler interested with casino or cryptocurrency gambling because more privacy than using deposit fund trough fiat where Bank account will publish there and not privacy yet.